τῷ πυρὶ τῆς ὁδοῦ τεκμαιρόμενοι → judging of the road by the fire
-έςindoblegable τὸ ἄτρεπτον, τὸ ἀ., τὸ ἀμείλικτον Procl.in Ti.3.258.22.